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| author | Mike Frysinger <vapier@gentoo.org> | 2009-04-11 01:20:19 +0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-06-12 14:03:48 +0400 |
| commit | 78f28a0a83a86dfe021f7d8169208b9af2a23201 (patch) | |
| tree | 8a97b224bdefba3c0ea057d8f5aa0af25760067a /arch/blackfin/mach-common/cache.S | |
| parent | f8b556514c4481a500ace4745731f04a77c08d54 (diff) | |
| download | linux-78f28a0a83a86dfe021f7d8169208b9af2a23201.tar.xz | |
Blackfin: simplify the do_flush macro
Simplify the do_flush macro now that we don't need to take into account
a second instruction being used together.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-common/cache.S')
| -rw-r--r-- | arch/blackfin/mach-common/cache.S | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/arch/blackfin/mach-common/cache.S b/arch/blackfin/mach-common/cache.S index c295e8f837c0..d9666fe6c3d6 100644 --- a/arch/blackfin/mach-common/cache.S +++ b/arch/blackfin/mach-common/cache.S @@ -15,6 +15,13 @@ .text +/* 05000443 - IFLUSH cannot be last instruction in hardware loop */ +#if ANOMALY_05000443 +# define BROK_FLUSH_INST "IFLUSH" +#else +# define BROK_FLUSH_INST "no anomaly! yeah!" +#endif + /* Since all L1 caches work the same way, we use the same method for flushing * them. Only the actual flush instruction differs. We write this in asm as * GCC can be hard to coax into writing nice hardware loops. @@ -23,7 +30,7 @@ * R0 = start address * R1 = end address */ -.macro do_flush flushins:req optflushins optnopins label +.macro do_flush flushins:req label R2 = -L1_CACHE_BYTES; @@ -44,22 +51,15 @@ \label : .endif P0 = R0; + LSETUP (1f, 2f) LC1 = P1; 1: -.ifnb \optflushins - \optflushins [P0]; -.endif -#if ANOMALY_05000443 -.ifb \optnopins -2: -.endif +.ifeqs "\flushins", BROK_FLUSH_INST \flushins [P0++]; -.ifnb \optnopins -2: \optnopins; -.endif -#else +2: nop; +.else 2: \flushins [P0++]; -#endif +.endif RTS; .endm @@ -77,7 +77,7 @@ ENTRY(_blackfin_icache_flush_range) */ P0 = R0; IFLUSH[P0]; - do_flush IFLUSH, , nop + do_flush IFLUSH ENDPROC(_blackfin_icache_flush_range) /* Throw away all D-cached data in specified region without any obligation to @@ -91,7 +91,7 @@ ENDPROC(_blackfin_dcache_invalidate_range) /* Flush all data cache lines assocoiated with this memory area */ ENTRY(_blackfin_dcache_flush_range) - do_flush FLUSH, , , .Ldfr + do_flush FLUSH, .Ldfr ENDPROC(_blackfin_dcache_flush_range) /* Our headers convert the page structure to an address, so just need to flush |